Door-lock electric switch.



DRAFISMAN.

PATENTED MAY 14, 1907.

W. E. HUGHES.

DOOR LOCK ELECTRIC SWITCH.

APPLICATION FILED JULY17,1906.

. 5.4 2 7 Fr, .uv Ainxdacfaiflrtflm hanhk atfoznaw 'using electriclights to light the various UNITED STATES WVILLIAM E. HUGHES, OF

SEATTLE, WASHINGTON.

DOOR-LOCK ELECTRIC S IVITCH.

Specification of Letters Patent.

zatenteol May 14, 1907.

Application filed July 17,1906. Serial No. 326,576.

To all whom, it may concern/.-

Be it known that 1, WILLIAM E. HUGHES, a citizen of the United States,residing at Seattle, in the county of King and State of Washington, haveinvented certain new and useful Improvements in Door-Lock ElectricSwitches; and I do hereby declare the follow ing to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to electric switches, and especially to switchesdesigned for association with door locks, and so arranged that lookingthe door will open the switch and break the circuit.

A further object of the invention is to provide an electric switchmounted upon a frame, and adapted to be inserted into the mortise of adoor frame, and provided with a switch operating lever positioned toengage the end of the locking bolt of the door lock when thrown.

It is well known that especially in hotels apartments and bedrooms thatguests will leave their rooms and look their doors, and remain absentfor a considerable length. of time, without extinguishing the lights,and whereby the expense of operating the said lights is continued whensuch lights are not in use.

The present invention is designed to economize electric current byextinguishingthe lights of the apartment whenever a door is locked fromthe outside, so that as soon as the guest leaves the room and locks thedoor the use of the current is discontinued for that room, but thelights instantaneously relighted when the door is unlocked for thetenant to enter the room.

With these and other objects in view, the invention comprises certainother novel constructions, combinations and arrangements of parts, aswill be hereinafter fully described and claimed.

In the drawings :Figure 1 is a View in side elevation of the improvedswitch asso ciated with the conventional door lock, with the switch opento break the circuit. Fi 2 is an end view of the switch with the strikeplate removed and taken on line 22 of Fig. 1. Fig. 3 is a view of theimproved switch closed partly in side elevation and with certain partsbroken away, as taken on line 33 of Fig. 2. Fig. 4 is a top plan view ofthe switch showing the top end of the switch operating lever broken awayand taken on line 44 of Fig. 3.

Like characters of referen responding views.

In its preferred embodiment, the invention rming the subject-matter ofthis application, comprises upper and lower frame pieces 6 10 and 11,respectively rigidly secured at one end to a strike plate 12 ofsubstantially the usual and ordinary construction, which tie the saidframe pieces together. The frame pieces 10 and 11 are further tiedtogether 7 and strengthened by cross bars 13 and 14 disposed at a littledistance from the strike plate. The strike plate 12 is provided with theusual latch receiving opening 15, and bolt receiving opening 16 adaptedrespec- 7 tively to receive latch 17 and bolt 18 of the lock shownconventionally at 19.

Between the crosspieces 13 and 14 the switch operating lever 20 isjournaled by means of a transverse shaft 21 and is en- 8c gaged at itsupper end by a spring 22 and at its lower end is provided with adownwardly extending arm 23 preferably provided at its extremity with across head 24 extending over the bolt receiving opening 16. 85

Pivoted upon the shaft 21 are the switch arms 25 joined by means of apin 26' disposed within the notch 27 formed in the lever 20. A spring 28also surrounds the shaft 21 and is engaged at one end by the lever 20 0and at its opposite end engages the pin 26. Upon the lower frame piece11 are mounted spaced contacts 29 and 30 insulated from the frame piece11 in any approved manner as by the insulation 31 and respectivelyconnected with wires 32 and 33 ce designate cor- 4 parts throughout theseveral 111 series with the lights of the apartment to be controlledthereby.

The lock herewith shown is provided with a bolt 18, and an auxiliarybolt 34 whereby both I0 the main bolt and the auxiliary bolt may bethrown from the outside of the door and the switch operated therebywhile only the main bolt and not the auxiliary bolt will be thrown fromthe inside of the door and whereby the 10 door may be locked from theinside without extinguishing the lights. The specific structure of thelook here shown is not claimed herein as it forms no part of thisinvention.

As shown in Fig. 3 the switch and arms 25 I I are between the contacts29 and 30 and complete the circuit of the wires 32 and 33 in series withthe lights of the apartment as mentioned. In Fig. 3 the main bolt 18only is shown as shot, but it will be understood that when the device isused with a lock having a bolt of ordinary construction, the bolt cannotbe shot without operating the switch. When the bolt 18 is thrown thecross head 24 is engaged by the bolt and the operating lever moved inthe direction indicated'by the arrow. The contacts 29 and 30 being ofresilient structure engage the switch arms with some force and such armsare held from movement until the lower edge of the notch 27 contactswith the pin 26 when the switch plates are disengaged from the contacts29 and 30, and under the tension of the spring 28 are thrown suddenlyout of engagement therein to prevent undue sparking of the contacts atthe switch so that the switch assumes the position in F 1 The throwingof the lever to the posit-ion shown in Fig. 1 exerts tension upon thespring 22 which remains in such position until the bolt 18 is withdrawnwhen the said spring 22 returns the switch blades to engagement be tweenthe contacts 29 and 30, and complete the circuit.

When used with a door lock of ordinary construction provided with anintegral locking bolt it is designed that the door be locked by use ofsuch bolt onl from the outside, and that any auxiliary locking means, asa separate bolt or other approved means be provided for locking the doorfrom the inside.

When used in connection with the lock mentioned as forming thesubject-matter of a copending application, the same lock may be employedfor locking the. door from the outside and the inside and when lockedfrom the inside, the lights are not extinguished, but

i l i when locked. from the outside they are eX- tinguished.

NVhat I claim is g 1. In an electric switch, a frame, spaced contactsmounted within the frame, a switch pivoted upon the frame and adapted toengage the contacts, a switch operating lever journaled upon the frame,and extendingdmvnwardly without the frame, and a resil ient memberwithin the' frame adapted to automatically close the switch when thelever is released.

2. In an electric switch, a frame adapted for association with a doorlock and provided with an opening adapted to receive a bolt of the lock,contacts mounted upon the frame, a switch pivoted upon the frame andarranged to make connection between the contacts, a switch operatinglever journaled upon the frame and provided with a notch and having anarm extending over a portion of the bolt receiving opening, a pinrigidly engaging the switch and positioned within the notch of theoperating lever, and a spring connected with the operating lever and thepin, and whereby the operating lever is capable of a limited movementindependent of the switch and to throw the switch suddenly under tensionoi" the spring. I

3. The combination with a strike plate having a bolt opening, of a leverfulcrumed intermediate its ends, and with one end extending across thebolt opening and the other connected with a retractin spring,

and a switch blade actuated by the ever.

In testimony whereof I aiiix my signature in presence of two witnesses.

WILLIAM E. HUGHES.

i tnesses:

G. Wain) KEMP, Sauur J. WILLIAMS.

